Create logger interface

pkg/log/log.go

@@ -0,0 +1,29 @@
+/*
+Copyright 2020 The Flux CD contributors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+package log
+
+type Logger interface {
+	// Actionf logs a formatted action message.
+	Actionf(format string, a ...interface{})
+	// Generatef logs a formatted generate message.
+	Generatef(format string, a ...interface{})
+	// Waitingf logs a formatted waiting message.
+	Waitingf(format string, a ...interface{})
+	// Waitingf logs a formatted success message.
+	Successf(format string, a ...interface{})
+	// Failuref logs a formatted failure message.
+	Failuref(format string, a ...interface{})
+}